PACIFIC CITY, Ore. — Scott Burns, professor emeritus in geology at Portland State University, thought he had seen it all — until he saw a couple of photos of an extremely rare sand formation on the ...
Images contained many spiders as well as other land forms known as 'Swiss cheese terrain'. London: As many as 10,000 citizen scientists have helped discover landforms known as 'spiders' on parts of ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback